Snow-plow.



NO MODEL.

PATENTED NOV. 22, 1904.

E. BOWMAN.

SNOW PLOW.

APPLICATION FILED JUNE 22, 1904.

2 SHEETS-SHEET l.

Attorneys No. 775,293. I PATBNTED NOV. 22, 1904. E. BOWMAN.

SNOW PLOW.

APPLIOATION FILED mm: 22, 1904.

N0 MOD 2 sums-sum a By 7cm Attorneys UNITED STATES Patented November 22,1904:-

ELHANAN BOWMAN, OF ELMWOOD, CANADA.

SNOW-PLOW.

SPECIFICATION formingpart of Letters Patent No. 775,293, dated November22, 1904.

Application filed June 22, 1904. Serial No. 213,657. (No model.)

To to whom it may concern:

Be it known that LELHANAN BowMAN,a subject of the King of Great Britain,residing at Elmwood, in the county of Bruce, Province of Ontario,Dominion of Canada, have in vented certain new and useful Improvementsin Snow-Flows; and I do hereby declare that the following is a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to new and useful improvements in power-actuatedsnow-plows designed especially for use in clearing railwaytracks ofaccumulations of snow, ice, &c.; and the invention consists in certainfeatures of novelty in the detail construction, operation, andarrangement thereof, all as hereinafter more fully described, andspecifically pointed out in the claims.

The object of the invention is to provide a device of the characterdescribed which may be utilized for the purpose specified either uponsingle lines of track or upon double tracks and which will work withperfect satisfaction in either place.

Referring to the drawings, in which similar numerals of referenceindicate corresponding parts in all the views, Figure 1 is a sideelevational view of my improved snow-plow. Fig. 2 is a transversesectional view of Fig. 1, taken approximately on the line 2 *2. Fig. 3is a front elevational view. Fig. 4 is a detached detail view of a formof plow-cylinder slightly modified from the construction shown in Figs.2 and 3, and Fig. 5 is a still further modification of such cylinder.

As indicated by the drawings,the snow-plow proper is carried within acar 1,which for convenience is mounted upon the trucks 2, carryingwheels 3.

I have shown diagrammatically illustrated in the drawings an engineplaced within the car 1 for the purpose of driving the snowplowcylinder, which engine, as therein shown, is substantially centrallylocated within the car; but it is evident that any number of suchengines or other driving means may be applied for the purpose, and theillustration shown is merely for convenience.

Referring to the parts in detail, 4 is an engine provided with the usualappurtenances, from which extends the pitman 5, which is connected withthe crank 6 of the horizontal shaft 7, which shaft is supported insuitable bearings within the abutment 8 centrally and in the sidecutting-plates 9, which parts are hereinafter referred to in detail.

In the preferred form of my'invention when it is intended to be usedupon a single track the shaft7is mounted as shown in Fig. 2 and hasconnected thereupon a plurality of cylinders 10 10, which cylinders aremounted between the cutting-plates 9 at the outer sides and said pitman5, and a cutting-prow 11, which is provided with the rearward extension12. Each of the cylinders 10 is provided with approximatelycircumferentiallydisposed spiral blades 13, which, as shown in Figs. 2,3, and 4, are oppositely disposed that is, the line of projection ofsuch blades is such that when the cylinders are rotated in the directionindicated by the arrow in Figs. 3 and 4 such rotation will cause theblades 13 to project the snow outwardly at both sides from thesnow-plow.

To facilitate the operation of the rotatable cylinders 10 and blades 13,a forwardly and downwardly extending platform 14. extends beyond thefront end of the car 1, and such platform extends upwardly, as shown inFigs. 1 and 3, so that snow engaged thereby will be conducted upwardlyto the rotatable cylinders before referred to. To facilitate theoperation of the plow, the prow 1]. extends from approximately themiddle of the platform 14 upwardly, and said prow is in crosssectionsubstantially wedge-shaped, as shown in Fig. 2, so as to serve as acutting means for snow, &c. projected against the same when the plow isin use. The prow 11 extends upwardly, as shown, and merges in thelaterally and rearwardly inclined deflecting-wings 15, which wingsextend upwardly above the cylinders 10, as best shown in Fig. l, andthereby serve as means for deflecting snow away from the track at asufiicient elevation to carry such snow over the surrounding embankment,if any exists.

As noted, the prow 11 is provided with a rearward extension 12, whichextends to the abutment 8, which is preferably rigidly connected withthe car-frame in any suitable manner, so as to serve as a convenientrigid support not only for the prow 11, but also for the driving-shaft 7as shown in Fig. 2.

hen it is desired to substitute a single cylinder for the plurality ofcylinders 10 shown in Figs. 2 and 3, the modification shown in Fig. 4:may be substituted, in which case the engine should be connected withthe cranks 16,

in which case a plurality of engines would probably be required or aplurality of connections from a single engine extending to each crank.Likewise when it is intended to use the snow-plow on a double track andproject the snow either to the right or left a single cylinder 10, suchas is illustrated in Fig. 5, may be substituted for the plurality ofcylinders 10 shown in'Fig. 2, in which case it will be evident thatrotation of such cylinder 10 will drive the snow in a directiondepending upon the direction of rotation of such cylinder.

For the purpose of reinforcing the spirallyarranged blades 13angle-brackets 17 are connected to the cylinders 10 l0 and to suchblades 13, such brackets being preferably arranged at the rear side ofsuch plates.

While I have shown in the accompanying drawings the preferred form of myinvention, it will be understood that I do not limit myself to theprecise formshown, for many of the details may be changed in form orposition without affecting the operativeness or utility of my invention,and I therefore reserve the right to make all such modifications as areincludedwithin the scope of the following claims or of mechanicalequivalents to the structures set forth.

Having described my invention, what I claim, and desire to secure byLetters Patent,

1. In a snow-plow, a supporting-car, a forwardly and downwardly inclinedplatform, a cutting-prow,oppositely-inclined wings above said prow, acentrally-disposed abutment secured to the car, a plurality of rotatabledrums, spiral blades on the drums, and means for rotating the said drumscomprising. a crankshaft, supported on said abutment, and a pitman, andmeans for actuating the pitman.

2. In a snow-plow, a supporting-car, a forwardly and downwardly inclinedplatform, a cutting-prow, oppositely-inclined wings above said prow, aplurality of rotatable drums on a substantially horizontal axis, spiralblades attached along their edges to said drums, and driving meansinterposed between said d rums, comprising a crank and a pitman.

3. In a snow-plow, a supporting-car, a forwardly and downwardly inclinedplatform, a cutting-prow, a plow-cylinder, spirally-disposed blades onsaid cylinder extending substantially the length thereof, braces on therear sides of said blades, and means for rotating said cylinder.

f. In a snow-plow, a supporting-car, a forwardly and downwardly inclinedplatform therefor, a cutting-plate at each side of the car, a rotatablecylinder mounted between said cutting-plates, spirally-disposed bladesattached substantially their entire length to said cylinder, and meansfor rotating the cylinder, comprising a crank-shaft and a piston, andmeans for actuating the pitman.

5. In a snow-plow, a supporting-car, a forwardly and downwardly inclinedplatform therefor, a cutting-prow, oppositely-inclined wings above saidprow, cutting-plates at the sides of the car, a cylinder rotatablymounted therein, oppositely-disposed spirally-arranged blades on thecylinder, and means for rotating the cylinder.

6. In a snow-plow, a supporting-car, a forwardly and downwardly inclinedplatform therefor, a cutting-prow, a rear abutment for said prow withinsaid car, a crank-shaft mounted in said abutment, a plurality ofcylinders mounted on said shaft, and oppositelydisposed spiral blades onsaid cylinders.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

ELHANAN BOWMAN.

WVitnesses:

P. P. PARK, RICHARD J. LILLICO.

